head to head · open source
Mermaid vs vulnrepo
Mermaid has 90,981 GitHub stars, 9,444 forks, 1,781 open issues and last shipped yesterday. vulnrepo has 583 stars, 118 forks, 2 open issues and last shipped 8 days ago. Mermaid leads on adoption by 15,506% (90,981 vs 583 stars). Mermaid is written in TypeScript under MIT; vulnrepo is written in TypeScript under Apache-2.0. Mermaid has attracted 10% as many forks as stars, vulnrepo 20%. Mermaid was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| Mermaid | vulnrepo | |
|---|---|---|
| GitHub stars | ★ 91K | ★ 583 |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-10-26 |
| Forks | ⑂ 9.4K | ⑂ 118 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mermaid if
- You weight community size — 91K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick vulnrepo if
- You want the vulnrepo feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and vulnrepo fits your workflow better
About Mermaid
Mermaid Generate diagrams from Markdown like text. Live Editor! 📖 Documentation 🚀 Getting Started 🌐 CDN 🙌 Join Us 简体中文 Try Live Editor previews of future releases: Develop Next :trophy: Mermaid was nominated and won the JS Open Source Awards (2019) in the category "The most exciting use of technology"!!! Thanks to all involved, people committing pull requests, people answering questions! 🙏 Table of content Expand contents About Examples Release Related projects Contributors Security and safe diagrams Reporting vulnerabilities Appreciation About Mermaid is a JavaScript based diagramming and charting tool…
read the full Mermaid overview →
About vulnrepo
VULNRΞPO Vulnerability Report Generator & Repository A client side, privacy first vulnerability report manager for security professionals. All data is encrypted and stored locally in your browser — nothing is sent to any server by default. Live app: Dev branch: Video walkthrough / Tutorial: Table of Contents Features Security Model Supported Import Sources Report Export Formats Methodology Tools AI / LLM Integration Getting Started Prerequisites Development Server Production Build Docker Project Structure API Integration Browser Support Contributing License Features Client side encryption — reports are encrypted…
read the full vulnrepo overview →
More in Data & Analytics
Related comparisons
More Business Intelligence & Reporting projects
Compare either of these against the rest of the Business Intelligence & Reporting field.
Frequently asked questions
Is Mermaid or vulnrepo more popular?
Mermaid has 90,981 GitHub stars and vulnrepo has 583. Mermaid has the larger community by that measure.
Are Mermaid and vulnrepo free?
Both are open source. Mermaid is licensed under MIT and vulnrepo under Apache-2.0. Neither carries a licence fee.
What is the difference between Mermaid and vulnrepo?
Mermaid is written in TypeScript and vulnrepo in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Mermaid or vulnrepo?
Choose Mermaid if you want the larger community (90,981 stars) or its MIT licence terms. Choose vulnrepo if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.